/Engine/Source/Editor/UnrealEd/Public/Kismet2/KismetEditorUtilities.h
Attempt to get the bounds for currently selected nodes
false if no nodes are selected
static bool GetBoundsForSelectedNodes ( const class [UBlueprint](API\Runtime\Engine\Engine\UBlueprint) * Blueprint, class [FSlateRect](API\Runtime\SlateCore\Layout\FSlateRect) & Rect, float Padding )